#define  _CRT_SECURE_NO_WARNINGS
#include<stdio.h>
void* my_memmove(void* dest, const void* src, size_t num)
{
	void* ret = dest;
	if (dest < src)
	{
		while (num--)
		{
			*(char*)dest = *(char*)src;
			dest =(char*)dest+1;
			src  =(char*)src+1;
		}
	}
	else
	{
		while (num--)
		{
			*((char*)dest + num) = *((char*)src + num);
		}
	}
	return ret;
}
int main()
{
	int arr1[] = { 1,2,3,4,5,6,7,8,9,10 };
	int arr2[10] = { 0 };
	my_memmove(arr1, arr1+2, 5 * sizeof(int));
	for (int i = 0;i < 10;i++)
	{
		printf("%d ", arr1[i]);
	}
	return 0;
}